mineral

Small translucent mineral fragment, possibly quartz

Quartz (SiO₂), tentative identification

AI-generated identification · may be incorrect

Pale tan-gray, translucent, with a vitreous luster and irregular fracture; quartz has Mohs hardness 7, no cleavage, hexagonal crystal structure, and specific gravity about 2.65. The blurry image prevents reliable confirmation or distinguishing it from calcite or feldspar.

Identified August 30, 2026More mineral →

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Physical properties

Formation & geological history

If quartz, it commonly forms in hydrothermal veins, igneous rocks, and sedimentary deposits, crystallizing throughout geologic time. The fragment appears naturally broken or possibly collected from gravel or a mineral specimen.

Uses & applications

Quartz is used in glass, ceramics, electronics, abrasives, construction aggregate, and jewelry. This tiny fragment has negligible commercial value unless part of a documented or unusually attractive specimen.

Geological facts

Glassy luster and inability to scratch it with a steel knife would support quartz; effervescence in dilute acid would instead suggest calcite. A close, well-lit image and hardness, streak, or acid tests are needed for confident identification.

Field identification & locations

Common worldwide, especially in Brazil, Madagascar, the United States, and hydrothermal vein districts. Estimated value: under $1 for an unidentified fragment; roughly $1–$10 if confirmed as an attractive small quartz crystal.